Drop kimi-k2-thinking from the catalog; remove temporary e2e trigger

- Moonshot serves newer platform accounts exactly one model, kimi-k3:
  K2-era ids and the kimi-latest alias return resource_not_found_error
  on both API surfaces (verified live 2026-07-21). Drop kimi-k2-thinking
  from the kimi_api catalog entry and the pricing defaults so the
  dashboard doesn't advertise a model that 404s; grandfathered accounts
  can still type K2 ids on the provider's model rows.
- Remove the temporary push trigger from agent-network-e2e.yml now that
  the branch validated green (run #76); nightly + workflow_dispatch
  remain.
- Remove CLAUDE.md from the repository.

.github/workflows/agent-network-e2e.yml

@@ -5,10 +5,6 @@ on:
   schedule:
     - cron: "0 3 * * *"
   workflow_dispatch:
-  # TEMPORARY: run on pushes to the Kimi feature branch to exercise the new
-  # provider scenarios with E2E_KIMI_TOKEN. Remove before merging.
-  push:
-    branches: [feat/kimi-3-agent-networks]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}